Washboard



April 21, 1925.

N. SORENSEN WAASHBOARD Fil-ed Nov. 9, 1921 Patented Apr. 21, 1925:.

UNITED STATENS! PATENT oFFicE.

NEIJS SORENSEN, TRAVERSE CITY, iMICHIGAN.

wA-sHBoAaD.

Application filed November To all 4'wlzom z't ma-g/ concern:

Beit known that I, Nniis SonnNsnN, a citizen of the United States of America, residing at Travcrse City, in the county of Grand Traverse and State of Michigan, have 'invented certain new and useful Improvei the character of the rubbing plate should be different for different kinds of materials washed thereon. A further object of the in- Vention is to make a wash board at low cost of nianufactnre whereby it may be linarketed at low cost, and one in which the frame part may be used until it is worn out without the necessity of throwing the entire. board away when the rubbing plate becomesworn out and useless. 'AT still further object, of the invention is to construct the wash board so that there are no projecting parts on which the one using it may be injured, the board having 'sinooth and rounded surfaces without sharp corners or jagged projections liable to produce injuries on use thereof; These and many other obJects and purposes, to-

- gethcr with constructions vfor ejffccting the same will appear as understanding of the invention is had from the following description, taken in connection with the-accompanyingdrawings, showing several niodifications of the invention, in which drawings,

' Fig.l l isla perspectiveview of a preferred forin of wash board construction, showing the sanie in position for the interchanging or replacement of rubbing plates therefor.

iFig. 2is a perspective view showing the wash board in position for use.

Fig. 3 is a longitudinal vertical section, with parts broken away of the wash board of the first form, the section beingtaken on the line 3-3 of Fig. 2. i

Fig. 4 is a transverse section on line 4-4 of Fig. 2.

Like reference characters refer to like parts in the different figures of the drawings.

9, 1921. seriaiin). 513,872.

In. the construction of wash board shown in Figs. 1, 2, 8 and 4, two side bars l and 2 vare used, being spaceda distance apart and held in spaced relation to each other by back cross boards 3 and 3a nailedi or otherwise permanently secured to the bars, board 3 being at the f upper ends of the bars and board r nearer the lower ends thereof, but some distance above such lower ends. A top guard board 4 is secured over the upper ends of the side bars, lying between the saine and projecting a short distance forward, as is common in wash boards.

A 'back board 5 is located between and, vpermanently secured tothe side bars l and 2, being located below and a short distance in front of theJ upper board 3. At its upper and lower wedges cross bars 6 are located, being positioned between the side bars 1 and 2 and perinanently 'Secured at their ends thereto. The upper bar 6 has a downturned lip 7 and the lower bar a similar upturned lip 7 so that the back 5 and said bars 6 with lips-7 serve as a container or receiver for the rubbing plates, as will be later described. On the inner side of bar l a' groove or recess 8 is cut, into which one side edge of back board 5, extends', the groove being wider than the tliickness of board 5. i i

The side bar 2 is of less width than bar 1 so that the ends Vof the guides' made by lips 7 over board 5 are open at the ends adjacent ysaid har 2. To close such open endsa third i snbstantially square cross section of a length snbstantially equal to the length of groove '8. One of the side bars is splitl longitudi- Vnally in the plane of the' front face of the back to form front and rear sections. This y bar 9 is pivotally connected to the bar 2 under it, a screw 11 pas'sing through the same at a point below, the lower cross bar 6 and into the lower bar 2.

It is designed that a plurality of rubbing i plates, made of metal shall be placed over the back board 5, the upper edges being guided between bars 6 and retained in place by lips 7, and the side edges of the plates coming to lbar 1 entering the groove8. I have shown two rubbing plates 12 and 12% placed one over the other, one being forined with wider spaced and deeper corrugationsl to the use of two of' the Plates., After being put in place, the retaining bar 9 is swung about its pivot screw 11 so as to lie directly over the bar 2 and held' in place by a bolt- 13 passing through bar 9 and through an opening 111 in bar 2 and board 3, its end being threaded for the attachment of a thumb nut 15 which may be screwed as tightly as needed against the under side of bar 2,. ln such position, the opposite side edges of the rubbing Plates are located within the recess 10 in bar 9, the end's ofv the guides for the Platesw are closed, and the combined widths of the bars 2 and 9 being the same as that of bar 1, a symmetrical construction is made.

It is obvious that the rubbing plates 12 and 12 can be easily removed and interchanged so as to bring either one desired uppermost forV use. For the coarser and heavier materials washed', the plate 12 is better, and for finer materials the plate 12. By merely taking off the thumb nut 15 and withd-rawing bolt 13 from opening 14:, the retaining bar 9 may be swung around, as shown in Fig. 1 so that the rubbing pl'ates may be removed and interchanged or replaced when worn out.

l/Vith my invent-ion, not only may a substantial and durable construction of wash board be made economically, but the provision in the construction by means of which the rubbing plates may be interchanged for different classes of goods washed is one of value in that one wash board only is needed instead of av number thereof, and the rubbing plates not used are contained in the wash board and protected' from bend'ing or other injury, such as Would be liable to occur if the rubbing Plates not used were separated from the wash board. Furthermore, the rubbing Plates are the parts subjected to the har-'dest service and usually become worn out orperforated so as to be useless long before the frame of the wash: board is .ready to be discarded, and with my invention new rubbing Plates may be substituted for those worn out and the wash board made practically as good as new at slight expensc. This is a feature of economy Which makes my invention of value. Every part of the com-pleted Wash board is smooth and one using the same is not liable to injury. This is particularly true of the rubbing Plates, which if ever ruptured or otherwise injured so as to leave jag-ged Projecting; parts, are immediately discarded and newones put in place.

The inven-tion is defined in the appended claims and I consider myself entitled to all forms of structure coming within the scope thereof.

I clai-m:

1. A wash board comprising spaced apart side bars a fixed 'back rigidly connecting the side bars, upper and' lower transverse guide bars rigid with the side bars and located at the upper and lower edges of the back and provided thereat with guide fianges, a rubbing plate supported against the said back and having its upper and lower edges fitted in the guide grooves formed between said back and said flanges, one of thel said side bars being split longitudinallly in substantially the plane of the front face of the back to form front and rear sections, the front section being pivot-ed to the rear section of the side bar below the lower guide bar and adapted to swing outwardly to expose the guide grooves at one side of the wash board to permit the removal of the rubbing plate and means for rig-idly securing the front section upon the rear section of the said split Side bar.

2. A wash board comprisin-g spaced apart side bars provided in their inner faces with longitud'inal recesses, a fixed back rigid'ly connecting the side bars with its side edges in said recesses, upper and lower transverse guide bars rigid with the side bars and l'ocated at the upper and lower edges of the back and provided; thereat with guide flanges, a rubbing plate supported* against the said back and having its upper and' lower edges fitted in the guide grooves formed between said flanges and saidv back, said rubbing plate having its side edges arrauged in the said recesses, one of the side bars beingl split longitudinally in approximately the plane of the front face of the back to form, front and rear sections,the front section being pivoted to the rear section below the lower transverse bar and adapted to swing outward' to expose the guide grooves at one side of the wash board to permit the removal of the rubbing plate, and means for rigidly securing the front section of. the split side bar to the rear section thereof.

In testimony Whereof I afIiX my signature.

N'ELS SORENSEN.

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